hi 
Have you noticed when run the games in the iPhone or iPad simulator,the disc become noisy. 
Usually, I run the game in the device so I have not notice that before.
Today, I run the game in the simulator, it make disc noise. 
I also tried the bird animation example and exported for iOS and run it in the simulator, it made a big noise also.
Then I tried the button example,It seems ok,just a little noise.
I not sure it's the problem of the simulator or the project exported by gideros.                
                
             
        
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https://sites.google.com/site/xraystudiogame
lion 10.7.3
Xcode:
4.3.2
https://sites.google.com/site/xraystudiogame